Beeli, G., Esslen, M., & Jancke, L. (2005). When coloured sounds taste sweet. Nature, 434, 38.

Downey, J.E. (1911). A case of coloured gustation. The American Journal of Psychology, 22, 528-539.

Eagleman, D.M., & Goodale, M.A. (2009). Why color synesthesia involves more than color. Trends in Cognitive Sciences, 13, 288-292.

Esterman, M., Verstynen, T., Ivry, R.B., & Robertson, L.C. (2006). Coming unbound: Disrupting automatic integration of synesthetic color and graphemes by transcranial magnetic stimulation of the right parietal lobe. Journal of Cognitive Neuroscience, 18, 1570-1576.

Grossenbacher, P.G. & Lovelace, C.T. (2001), Mechanisms of synesthesia: Cognitive and physiological constraints, Trends in Cognitive Sciences, 5, 36-41.

Hocel, M. & Milan, E.G. (2008). Synaesthesia: The existing state of affairs. Cognitive Neuropsychology, 25, 93-117.

Hubbard, E.M. (2007). Neurophysiology of synesthesia. Current Psychiatry Reports, 9, 193-199.

Mattingley, J.B. (2009). Attention, automaticity, and awareness in synesthesia. Annuals of the New York Academy of Sciences, 1156, 141-167.

Muggleton, N., Tsakanikos, E., Walsh, V., & Ward, J. (2007). Disruption of synaesthesia following TMS of the right posterior parietal cortex. Neuropsychologia, 45, 1582-1585.

Pearce, J.M.S (2007). Synaesthesia. European Neurology, 57, 120-124.

Ramachandran, V.S., & Hubbard, E.M. (2001). Psychophysical investigations into the neural basis of synaesthesia. Proceedings Royal Society London, 268, 979-983.

Ward, J., Simner, J., Auyeung, V. (2005). A comparison of lexical-gustatory and grapheme-colour synaesthesia. Cognitive Neuropsychology, 22, 28-41.

Ward, J., Tsakanikos, E., & Bray, A. (2006). Synaesthesia for reading and playing musical notes. Neurocase, 12, 27-34.